trewhella



B. H. TREWHBLLA. METALLIG ROPE FITTING.' APPLIUATIONIILED NOV. 1, 1912.

Patented Sept. 23, 1913.

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Specification of. IiQttGll intent; I Patented Sept. 23, 1913.Application med November 1, 1812. Serial No. 788,0Bo.- I I To all whomit may concern:

Be it known that I, BENJAMIN Hosnmo TR'EWHELLA, a subject of the King ofGreat Britain, residing at No.6 Alma street,-Soho, Smethwick,Birmingham, England," engineer, haveinvented an Improved MetallicRope-Fitting, of which the following is a This invention relates to wirero es and metallic ro e fittings employed for form ng a loop in t e endof a rope orfor' joining wire ropes or the ends-of'a rope, andjconsistsin certain improvements whereh an eflicient and inexpensive fitting ispro need which ma -be readily attached in position. 'he drawingsillustrating the invention I comprise-Fi re 1 an elevation of thefitjoining ropes.

ting as applie for forming a loop on the end of a rope, Fig. 2 atransverse section on line II- -II, 'Fig. 1, Fig. 3 an end elevation ofthe'fittlng, and Fig. 4 an enlarged end view of the wedge. Fig. 5 is asimilar view to Fig. 1 showing the fitting asapplied for Accordin tothis invention the fitting'comprises a ho low metallic casing or band 1aving a longitudinal passage of an elongated or approximately ellipticalshape in cross section, the interior of two opposite walls 2 beinapproximately arallel'while the interior aces 3, 4, of the ot or twowalls, which are rounded off to fit the rope portions A, B, are tapered.

-One of the tapered interior faces 4) of the casing or band is formed:with spiral grooves 5 into which the strands of one rope portion A isfitted, while the other tapered interior face 3 is smooth. The wedge 6to the a proximately parallel interior faces that is inserted betweenthe rope portions A, B, is concave on one side? and formed with splralgrooves 8 to engage the strands of the other ropeportlon B, while itsother opposlte s1de 9 is concave to fit partially around the other ropeportionA. The two remaining sides 10,10, of the wedge conform 2,2, of te casing or band.

When the fitting is in position on the rope.

portions, the wedge and casing will be forced .to move with the ropePOItIOIlS' which are engaged by the spiral grooves, while the ropeportions are able slide to a certain extent andca'sin 1 It will eevident that when the rope or ropes is or are put in tension, that thefitin the smooth concave parts of the Wedge ting is tightened and'athoroughly satisfactory junction efi'ected. I

Fig. 1 shows the endof a re e turned back and grip ed: by means of t ecasing-- and wedge to orm a loop 11, while Fig. 5 illustrates the mannerin which the invention is employed to. join two ropes or the ends of arope.

I claim r -1. A metallic rope fitting adapted to receive'two ropeortions consisting of an interiorly tapered casing o r band formed inone tapered 'fa'ce'only with spiral grooves to-grip one rope portion anda Wed e formed with 's iral grooves on one side on y to grip the at orropeportion, substantially as and for the purpose specified.

2. A metallic rope fittingadapted to form a loop on the end of a rop e,consisting of an interiorly tapered casing or band adapted to receivethe two rope portions of the 100 and formed in one tapered face only wit3. A metallic rope fitting adapted to receive two rope portions,comprising a hollow metallic casmg having a longitudinal:

passage elongated or approximatelyelliptical in cross-sectiomsmd passagehavmg two opposite rounded vtaperin interior faces and two approximatelypara lel faces, one

othersmooth, and a wedge concave on two opposite sides and approximatelyparallel.

said concave sides on. the other sides, one of o being spirally;grooved, and the othersmooth,

the smooth face being arranged-in themein opposite the spiral face ofthe latter.

mi rounded face being spirally-grooved and the n'testimony whereof Ihave hereunto se my hand-in presence of two-subscribing witnesses. I

BENJAMIN HOSKING TREWHELLA.

Witnesses WALTER AnA'in's, BENJAMIN TREWHELLA DRUMMON'D.

